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A Cationic Hydrophobic Association Polyacrylamide "Water-in-Water" Emulsion

A technology of polyacrylamide and hydrophobic association, which is applied in the field of cationic hydrophobically associated polyacrylamide "water-in-water" emulsion and its preparation, which can solve the problems of high cost, unsafe and environmentally friendly reverse emulsion, and difficulty in dissolving HAPAM dry powder.

Inactive Publication Date: 2011-12-21
CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention synthesizes a cationic hydrophobic association "water-in-water" polyacrylamide emulsion by means of dispersion polymerization in an aqueous medium. Dissolving and inverse emulsions are costly, unsafe and environmentally friendly

Method used

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  • A Cationic Hydrophobic Association Polyacrylamide "Water-in-Water" Emulsion
  • A Cationic Hydrophobic Association Polyacrylamide "Water-in-Water" Emulsion
  • A Cationic Hydrophobic Association Polyacrylamide "Water-in-Water" Emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In a 250ml four-neck round-bottomed flask equipped with a condenser tube, thermometer, nitrogen inlet and stirrer, add 87g of deionized water, 54g of ammonium sulfate, 22g of acrylamide, 8g of methacryloyloxyethyltrimethylammonium chloride ( 80% concentration) solution, 17g acryloyloxyethyltrimethylammonium chloride (80% concentration) solution, 30g stabilizer, 1.1g methacryloyloxyethyldimethylbutylammonium chloride (DM4 ), 0.02g EDTA; constant temperature is 25°C, stirring is 800 rpm, and nitrogen is passed through to remove oxygen in the system. After nitrogen was purged for about 15 minutes, 0.02ml of 1wt% V044 solution and 0.01ml of 1wt% NaHSO were added 3 solution, 0.02ml 1wt% (NH 4 ) 2 S 2 O 8 solution. The polymerization started after 15 minutes, and the viscosity of the system continued to increase within 30 minutes. After 2 hours of polymerization, the system gradually changed from transparent to milky white, and the viscosity also gradually decreased. At...

Embodiment 2

[0026] In a 250ml four-neck round bottom flask equipped with a condenser, thermometer, nitrogen inlet and stirrer, add 85.9g deionized water, 54g ammonium sulfate, 22g acrylamide, 8g methacryloxyethyltrimethylammonium chloride (80% concentration) solution, 17g acryloyloxyethyltrimethylammonium chloride (80% concentration) solution, 30g stabilizer, 2.2g methacryloxyethyldimethylbutylammonium chloride ( DM4), 0.02g EDTA; constant temperature of 25°C, stirring at 800 rpm, and nitrogen flow to remove oxygen in the system. After nitrogen was purged for about 15 minutes, 0.02ml of 1wt% V044 solution and 0.01ml of 1wt% NaHSO were added 3 solution, 0.02ml 1wt% (NH 4 ) 2 S 2 O 8 solution. The polymerization started after 15 minutes, and the viscosity of the system continued to increase within 30 minutes. After 2 hours of polymerization, the system gradually changed from transparent to milky white, and the viscosity also gradually decreased. At this point 0.02 ml of a 1 wt% soluti...

Embodiment 3

[0028] In a 250ml four-neck round bottom flask equipped with a condenser, thermometer, nitrogen inlet and stirrer, add 85.9g deionized water, 44g ammonium sulfate, 8g sodium sulfate, 22g acrylamide, 8g methacryloxyethyltrimethyl ammonium chloride (80% concentration) solution, 17g acryloyloxyethyltrimethylammonium chloride (80% concentration) solution, 30g stabilizer, 2.2g methacryloyloxyethyldimethylbutyl Ammonium chloride (DM4), 0.02g EDTA; constant temperature at 25°C, stirring at 800 rpm, and nitrogen flow to remove oxygen in the system. After nitrogen was purged for about 15 minutes, 0.02ml of 1wt% V044 solution and 0.01ml of 1wt% NaHSO were added 3 solution, 0.02ml 1wt% (NH 4 ) 2 S 2 O 8 solution. The polymerization started after 15 minutes, and the viscosity of the system continued to increase within 30 minutes. After 2 hours of polymerization, the system gradually changed from transparent to milky white, and the viscosity also gradually decreased. At this point 0....

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Abstract

The invention relates to the synthesis of a hydrophobic association polyacrylamide "water-in-water" emulsion. Stable " "Water-in-water" emulsion has a small particle size and can be quickly dissolved in water, which solves the problem that the current hydrophobic association polyacrylamide dry powder is difficult to dissolve.

Description

technical field [0001] The invention relates to a cationic hydrophobically associated polyacrylamide "water-in-water" emulsion and its preparation, and belongs to the field of new water-soluble polymers. Background technique [0002] Polyacrylamide (PAM) is a water-soluble polymer compound with a wide range of uses, known as "Baiye auxiliaries". It is a general term for acrylamide homopolymers and various copolymers, including non-ionic, anionic, cationic And zwitterionic and can be in liquid, colloidal, dry powder and other physical forms. In recent years, according to the needs of applications, researchers have introduced various functional monomers into the polymer segments to prepare polyacrylamides with different functions. Cationic hydrophobically associating polyacrylamide is one of the more studied functions. Sexual polyacrylamide. [0003] Cationic hydrophobically associated polyacrylamide adopts some monomers with certain hydrophobic ability and AM or cationic mo...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F220/34C08F226/02C08F2/16
Inventor 冯玉军吕永利张胜束松矿赵永峰
Owner CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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